This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI32X200SN, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.

The AirTAC SI32 Standard Air Cylinder SI32X200SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 200mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI32X200SN, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI32X200SN is a discontinued double-acting ISO 15552 profile cylinder with a 32mm bore and 200mm stroke. Delivering 402N push force at 0.5MPa through a G1/8 port, it is replaced by the SAI32X200SN. This direct successor matches the exact mounting interface, force, and dimensions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SI32X200SN includes a magnet for CS1-B/DS1-B switches and an NBR seal (-20 to +70C). The SAI family adds SAIL, SAIF, and BSAI variants.
| Model | Airtac SI32 Standard Air Cylinder SI32X200SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI32X200SN |
| Bore size | Ø32 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI32X200SN carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The SAI32X200SN produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | Bore size in mm. |
| ×200 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Uses the 402N push force at 0.5MPa to reliably push lightweight machined components out of a fixture during automated assembly.
Actuates a routing gate at 30-800mm/s to sort small boxes on a line, taking advantage of the compact 32mm profile barrel.
To replace the SI32X200SN, order the SAI32X200SN. Confirm the ISO 15552 interface, 32mm bore, 200mm stroke, G1/8 port, and mounting accessory. The SAI uses current AirTAC switches for the magnet. For higher force, the 40mm bore yields 628N push at 0.5MPa; for tighter spaces, a 25mm stroke reduces length. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for holding, or choose the SAIL/BSAI lock variant. At 200mm stroke, side-load is minimal, but ensure guide alignment to prevent rod bending.
Replacement checklist
Yes, the SI32X200SN is discontinued. The direct replacement is the SAI32X200SN. It is a true ISO 15552 profile cylinder that matches the 32mm bore, 200mm stroke, 402N force, G1/8 port, and mounting interface, fitting existing fixtures perfectly.
The G1/8 port bore delivers 402N push and 345N pull at 0.5MPa, 563N push at 0.7MPa, and 724N push at 0.9MPa. The theoretical max force is 82kgf at 1.0MPa. It operates at 30-800mm/s with a 27mm adjustable air cushion.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI32X200SN replacement — usually within 7-8 hours.